Method of excavating and filling



v 1,529,722 J. R. sENslBAR METHOD OF EXCAVATING AND FILLNG Filed sept.v22. 1920 2 sheets-sheet 2 March 17. 1925.

Patented Mar. 17, 1925.

UNITED STATES,

JACOB a. sENsrnAR, or QH'IAGo, I'fL'LtNors.

METHOD yor vit'Xoiii/Aarriver AND Finn-NG.

Application led September 22, 1920. Serial No. 412,030.

To @ZZ 'whom t rmuy concern:

Be it known that l, JACOB R. SENsrAR, a citizen of the United States,residing at 133 W. lVashington Street, Ghicago, in the county of Cookand State of Illinois, have invented a new and useful Improvement inMethods of Excavating and Filling, of which the following is aspecification.

This application relates to the method of excavating and filling, and isfully described in the following specification and shown in theaccompanying drawing in which:

Fig. 1 is a diagrammatic plan view of -a pumping plant embodying myinvention;

Fig. 2 'is aside elevation `of the same;

Fig. 3 is a cross sectional view on the line 3, 3 of Fig. 1 and, y

Fig. 4 is an enlarged plan view of the scow showing the pumps andconnections.

The following operations are described as being carried on vin a largelow level area 10 preferably near av body of water 11. It is desired tota'ke earth from the area 12 in- Vdicated by dotted lines and deposit itin the rectangular area 13 so as to make a fill. At the same time the'excavated area 12 becomes a lake or reservoir, which is preferably keptlled during the excavating operation by a channel 14 by which it isconnected to the body of water 11.` The fill 13 maybe carried to asingle level or to a series of levels as desired, each level beingcontrolledpfreferably by the means .described in my Patent No.1,392,663, granted October 4', 1921.`

A small lake 15 is formed near the 'end of the area 12 and water isbrought' thereto in any suitable way as thru the channel 14. A scow 16is placed in this lake and is anchored by guy-ropes 16". l It carries acentrifugal sand pump driven by any suitable means such as a motor 17a.The pump has a submerged intake pipe 18 which is preferably mounted inawell known manner so as to swing thru either a vertical or a hori-4zontal arc and has mechanism (not shown) whereby it may be raised andlowered or swung sidewise at will.

The sand pump 17 delivers thru a check valve 19 and a T 20 the pipe 21and thence thru the riser 22 to the highest point in the pipe line 23.This ipe line is carried on a suitable frameworl 24 and has a graduallyincreasing slope or fall from its highest point to the discharge ends 25as shown in Fig. 2.

n The pipe 21 isucarried` on ,pontoons 26 and .1s provided at thispoi-nt with flexible jolnts lso. as topermit the pipe to adapt itselfL.to

yvarious positions of the scow.l

A. idischarge pipe 27 is connected to the T 20 :thru the valves 28 and29y and the T 30. A relatively small jet pump 431driven by a motor 32 isconnected tothe T 30 :between .the valves'28 Iand 29. llVhen the sandpump 17 is inV operation the valve 28 is normally .open and the valve52,9 is closed.

VVifth the intake 18 near lthe bottom, :the

water delivered by the sand pump 17 contains a very high percentage ofsoil, sand and gravel which will settle to the :bottom `of the pipes ifallowed to slow up even for a brief period. It is necessary to keep thewater moving at a speed about )thirteen Afeet per second in order tohold this sediment in suspension. In operation however .it frequentlybecomes necessary to stopzthe pump.

When ythis happens, the water in the pipe 22 will keep moving at a ratewhich will insure the sediment being carried out. To assist in clearingtzllie pipes 21, '23,' the intake l18 is raised 4from the :bottom ofthelake 15 soI as to' pump only .clear water.

As the sand pump 17 is stopped, the valve 29 is opened. therebypermitting any sand in lthe 'pipe'21 to fbe deischarged'thru the pipe27, clearing the vpipe 21 and'- discharging the lsand near Ithe end ofthfe intake pipe 18, where it may be sucked `up later.

ylVlhen however a plug of sand does occur in :the line as indieatednbylrparessure inthe pipe suddenly rising above normal, the 4sand pump isstopped, the valve 29 opened and the water and sand in the pipes 21 and22 discharged as previously described. The valve 28 is then closed andthe jet` pump 31 started. It delivers clear water at a very much higherpressure but in smaller quantity than the sand pump 17. This clear waterwill slowly open a passage thru the sand plug which will rapidly be wornaway. When such a plug occurs, the sand settles to the bottom andaccumulates at one or more points in the pipe line until the pipe isnearly closed. The sand at the top of the pipe however is less denselypacked than at the bottom and the water pressure slowly builds up fromthe small high pressure jet to carry the volume of Water ldelivered bythe jet pump. As soon as the pressure neary the pump falls to nearlynormal, the operator knows Vthat the sand plug is partly rremoved andstarts thei'sandpump on clear Water until the gauge shovvs that the plugn, it covers the predetermined area `12, While allA of the soil removedis depositedl in the varea 13. rrlfhe lake lois kept full of Water bythe channel 14 and the Water pumped into the area 13'may lalso bedrained back into the lake 15.

While I have shown and described but a rsingle embodiment of myinvention, it isvto vbe understood vthat it is capable of many moremodications-= Changes, therefore, `in the construction' and arrangementmaybe made which do not depart from thelscope of the appended. claims inWhich it isl :my intention to claim all novelty inherent in `myinventionas broadly as possible in view of the prior art. A

What I claim as'nevv cure by Letters Patent is 1. The method ofexcavating andfilling comprising undermining the material to :beexcavated, mixing it With Water, pumping to the highest point of a highlevel pipe line, ydistributing by gravity with an increasing 'fall inthe pipe, line from said highest point, moving the pump as the materialis excavated and tapping into said pipe line at vanew point Which Willthen be the highest point in the line. y

r2. In combination, a sandf pump adapted to pump a' mixture of sandl andWater thru -a long high level pipe line, a` delivery lin-e leading fromthe sand pump to said high level pipe line, a check valve in thedelivery line, and a valve controlled discharge pipe ybeyondY the check`valve and near the pump and desire to se-v Which may be opened forclearing the delivery line when the sand pump is stopped.

3. In combination, a sand pump adapted to vpump a mixture of sand andWater thru a long high level pipe line, a delivery line leading,` fromthe sand pump to said high level pipe line, a checlrvalve in thedelivery line,-and a valve controlled discharge pipe beyond the checkvalve and near the pump Whichfmay be opened for clearing the de# liveryline when the sand pump is stopped, the discharge pipe emptying near theintake of the sand pump. y

4. In combination, a Lsand pump adapted to pump a mixture of sand andWater thru a long high level pipe line, a delivery line leading from`the sandv pump to said high level pipe line, a check valve in thedelivery line, a valve controlled discharge pipe beyond the checkvalve'and near-the pump which. may loe` opened for clearing the deliveryline when the sand pump is stopped, and a jet pump connectedto saiddelivery line, capable of pumping against a higher' ypressure than thesand pump and adapted to pump a stream of clear Water at high pressurethru the high level pipe line to clear it of sand plugs When .such formtherein.` n

5. In combination, 'a sand pump adapted to pump a mixture of sand andWater thru a relatively long pipe line, adelivery line leading from vthesand pump to said high level pipe line, a check valve in the deliveryline, a valve controlled discharge pipe beyond the check'valve and nearthe pump which may be openedr for clearingfthe delivery line-vvhen theksand pump is stopped, and a jet pump connected to said delivery line,capablev of pumping against a higher pressure than the sand pump andadapted to pump a ystream of clear Water l,at high pressure thru thelongy pipe line to clear it of `sand plugs Whensuch form therein.

'JACOB R. SENSIBAR.

